May is prime warm-season planting time in mild-winter zones, with soil temperatures rising and growth accelerating. This is the month to get main-season crops established outdoors, keep up with succession sowing, and set up supports before vines and tall plants take off. Watch moisture as days warm, mulch to hold soil moisture, and keep an eye out for the first big flush of pests as the garden hits its stride.

Indoors (fresh harvests):

  • Microgreens: peas, broccoli, sunflowers, arugula
  • Sprouts: alfalfa, broccoli, radish, mung
  • Herbs & greens under lights: chives, parsley, mint

Transplants to move outdoors (harden first): pepper, tomato, eggplant, melons, basil, okra — these should go out early May if not already in the ground

Crops that can be directly sown outdoors in May: beans, corn, cucumber, squash, melons, okra, sunflower, basil, dill, sweet potato slips. Succession sow beets, carrots, and radishes early in the month before heat sets in.

Cover crops: buckwheat, cowpeas, sorghum-sudangrass

Note: Warm-season crops should be going directly outdoors now, not starting under lights.

Tip: An Olympia, WA zone 8 is very different from a Jackson, MS zone 8. Consider checking with your state Extension Service office for more specific recommendations and guidelines.

Use your USDA zone as a guide. Microclimates matter — coastal/urban spots run warmer; high elevation runs colder.

50 100 true //store.trueleafmarket.com/cdn/shop/t/54/assets/review-fallback.json?v=33078429469613971781712858278
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4042 Items
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Strawberry Seeds - Mignonettesmall size packet type seed packaging for - Strawberry Mignonette
-0
Heirloom
Strawberry Seeds - Mignonette
Starting at $3.79
Barley (Organic) - Bulk Grainssmall size packet type seed packaging for - Barley Organic Bulk Grains & Foods
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Starting at $5.91
Pepper Seeds - Hot - Cayenne Purplemid size pouch type seed packaging for - Pepper Hot Cayenne Purple
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Pepper Seeds - Hot - Cayenne Purple
Starting at $3.29
Lettuce Seeds - Leaf - Salad Bowl Redmid size pouch type seed packaging for - Lettuce Leaf Salad Bowl Red
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Starting at $2.99
Whole Oats (Organic) - Bulk GrainsWhole Oats (Organic) - Bulk Grains
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Organic
Whole Oats (Organic) - Bulk Grains
Starting at $7.20
Broccoli Seeds - Romanescosmall size packet type seed packaging for - Broccoli Romanesco
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Broccoli Seeds - Romanesco
Starting at $2.99
Pepper Seeds - Sweet - Pimento Lmid size pouch type seed packaging for - Pepper Sweet Pimento L
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Starting at $2.99
Bean Seeds - Bush - Contender (Organic)small size packet type seed packaging for - Bean Bush Contender Organic
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Bean Seeds - Bush - Contender (Organic)
Starting at $3.77
Pak Choi Seeds - Joi Choi Hybridmid size pouch type seed packaging for - Pak Choi Joi Choi Hybrid
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Pak Choi Seeds - Joi Choi Hybrid
Starting at $3.99
Kale - Dwarf Vates Blue Scotch Curled (Organic) - Microgreens Seeds
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Kale - Dwarf Vates Blue Scotch Curled (Organic) - Microgreens...
Starting at $11.20
Four O Clock Seeds - Marvel of Peru Mixmid size pouch type seed packaging for - Four O Clock Marvel of Peru Mix
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Spelt (Organic) - Bulk GrainsSpelt (Organic) - Bulk Grains
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custom packaging for Premium Jar Sprouting Kit
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Premium Jar Sprouting Kit
$115.82
Pepper Seeds - Hot - Thai Super Chili F1 Hybrid
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Starting at $3.99
Kale Seeds - Dwarf Siberian - Organicsmall size packet type seed packaging for - Kale Dwarf Siberian Organic
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Watermelon Seeds - Picnic - Moon & Stars Yellow Fleshsmall size packet type seed packaging for - Watermelon Picnic Moon & Stars Yellow Flesh
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Starting at $2.99
Eggplant Seeds - Money Maker - Hybridmid size pouch type seed packaging for - Eggplant Money Maker Hybrid
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Tomato Seeds - Salad - Green Zebra (Organic)small size packet type seed packaging for - Tomato Salad Green Zebra Organic
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Starting at $3.59
Radish Seeds - German Giantmid size pouch type seed packaging for - Radish German Giant
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Cucumber Seeds - Lemon (Organic)Cucumber Seeds - Lemon (Organic)
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Tomato Seeds - Slicing - Marglobe (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
-41%
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Self-Watering Growing TraysSelf-Watering Growing Trays
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Staff Favorite
Self-Watering Growing Trays
Starting at $19.20
Amaranth (Organic) - Sprouting SeedsAmaranth (Organic) - Sprouting Seeds
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Heirloom
Organic
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Starting at $17.15
Gourd Seeds, Bitter - White - Hybridmid size pouch type seed packaging for - Gourd Bitter White Hybrid
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Gourd Seeds, Bitter - White - Hybrid
Starting at $3.99
Sunflower Seeds - Ring of Fire
Starting at $4.29
Lettuce Seeds - Heatwave Mix (Organic)
Starting at $3.59
Tomato Seeds - Slicing - Heirloom Rainbow Blend
Starting at $2.99
Garlic Bulbs - Fall - Softneck - Inchelium Red
$17.99
Cabbage Seeds - All Seasons (Organic)
Starting at $3.59
Tomato Seeds - Salad - Arkansas Traveler
Starting at $3.29
Seed Potatoes - Spring - Yukon Gold (Organic)
Starting at $19.33
Squash Seeds - Costata Romanesco Zucchini
Starting at $3.59
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